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Figure 11
(a) Seven-segment for 4 µm beam, (b) five-segment for 4 µm beam, (c) simple concave for 5 µm beam: comparison of fits to super-Gaussians of representative knife-edge scans. Maximum experimental intensity normalized to unity for easy comparison of plots. Wire distance from center of mirror chamber, p and R2 are in the labels. Black curves with dots are measured profiles. Thick solid red curves are best-fit super-Gaussians. Thick dashed red curve in (c) is best-fit super-Gaussian for which p is fixed at the value in (a). This is done for comparison of flatness and striation with (a). Note the decreasing goodness of fit R2 as the number of segments decreases.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 23| Part 6| November 2016| Pages 1333-1347
https://doi.org/10.1107/S1600577516013308
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